Area Codes
| 628 | California This Area code is scheduled to provide numbering relief to Area code 415 but no date has been assigned for this to go into effect. | More information at: Area Code 628 Phone Number Blocks
| 628 | California This Area code is scheduled to provide numbering relief to Area code 415 but no date has been assigned for this to go into effect. | More information at: Area Code 628 Phone Number Blocks